RE: Powering a Hog Bipe
christoph,
I don't know, you may be a tad bit underpowered with that motor. I have an OS 91 4-stroke on mine and I feel that's a perfect match for the Hog Bipe. You might be happier with a Saito 100 if you want to stay with a Saito engines, if not get an OS 91. IMHO this plane was maid for the OS 91 4-stroke, or the other way around because they are a perfect match.
Ken